Testing apparatus for an outer housing of a pump and method for the testing of an outer housing of a pump

Abstract

Disclosed is a testing apparatus for an outer housing of a pump, wherein the testing apparatus includes a separation element; a first and a second closure element, wherein the first and second closure element respectively close an axial end of the outer housing in a sealing manner; a middle pressure line which is arranged in the first or the second closure element; and a bounding element, wherein the bounding element closes the outlet outside of the outer housing, and wherein a high pressure line is arranged in the bounding element. The separation element is configured and arranged in the outer housing such that the separation element bounds the outlet of the outer housing and the outer housing is divided into a first pressure region and a second pressure region, wherein the first pressure region and the second pressure region are configured as pressure regions independent from one another.

The invention claimed is: 
     
       1. A testing apparatus for an outer housing ( 3 ) of a pump, wherein the outer housing ( 3 ) has an outlet ( 4 ), and the testing apparatus ( 1 ) includes
 a separation element ( 2 ); 
 a first and a second closure element ( 91 ,  92 ), wherein the first and second closure elements ( 91 ,  92 ) respectively close an axial end of the outer housing ( 3 ) in a sealing manner; 
 a middle pressure line ( 71 ,  72 ) which is arranged in the first or the second closure element ( 91 ,  92 ); and 
 a bounding element ( 8 ), wherein the bounding element ( 8 ) closes the outlet ( 4 ) outside of the outer housing ( 3 ) and wherein a high pressure line ( 81 ,  82 ) is arranged in the bounding element ( 8 ), and 
 the separation element ( 2 ) is configured and arranged in the outer housing ( 3 ) such that the separation element ( 2 ) bounds the outlet ( 4 ) of the outer housing ( 3 ) and the outer housing ( 3 ) is divided into a first pressure region ( 5 ) and a second pressure region ( 6 ), wherein the first pressure region ( 5 ) and the second pressure region ( 6 ) are configured as pressure regions independent from one another. 
 
     
     
       2. A testing apparatus in accordance with  claim 1 , wherein the separation element ( 2 ) is arranged in the outer housing ( 3 ) such that the second pressure region ( 6 ) is divided into a first pressure chamber ( 61 ) and a second pressure chamber ( 62 ). 
     
     
       3. A testing apparatus in accordance with  claim 2 , wherein the first and second pressure chambers ( 61 ,  62 ) are connected by means of a compensation line ( 21 ). 
     
     
       4. A testing apparatus in accordance with  claim 3 , wherein the compensation line ( 21 ) is arranged in the separation element ( 2 ). 
     
     
       5. A testing apparatus in accordance with  claim 1 , wherein the separation element ( 2 ) includes a circumferential groove and the circumferential groove is arranged at the outlet ( 4 ) of the outer housing ( 3 ). 
     
     
       6. A testing apparatus in accordance with  claim 1 , wherein the separation element ( 2 ) is connected to a shaft ( 7 ). 
     
     
       7. A testing apparatus in accordance with  claim 6 , wherein the shaft ( 7 ) is axially arranged in the outer housing ( 3 ) and is connected to the first and second closure elements ( 91 ,  92 ). 
     
     
       8. A testing apparatus in accordance with  claim 1 , wherein the first pressure region ( 5 ) and the second pressure region ( 6 ) are separated from one another by means of the sealing element. 
     
     
       9. A testing apparatus in accordance with  claim 1 , wherein the sealing element is arranged between the separation element ( 2 ) and the outer housing ( 3 ). 
     
     
       10. A testing apparatus in accordance with  claim 1 , wherein the separation element ( 2 ) is of two part design and a part ( 22 ) of the separation element is connected to the first or the second closure element ( 91 ,  92 ). 
     
     
       11. A method for testing an outer housing ( 3 ) of a pump, wherein the outer housing ( 3 ) has an outlet ( 4 ),
 and the testing apparatus ( 1 ) includes a 
 separation element ( 2 ); 
 a first closure element ( 91 ) and a second closure element ( 92 ); 
 a middle pressure line ( 71 ,  72 ) which is arranged in the first or the second closure element ( 91 ,  92 ); 
 a bounding element ( 8 ), wherein a high pressure line ( 81 ,  82 ) is arranged in the bounding element ( 8 ), 
 and wherein an axial end of the outer housing ( 3 ) is respectively closed in a sealing manner by means of the first and second closure elements ( 91 ,  92 ), wherein the separation element ( 2 ) is configured and arranged in the outer housing ( 3 ) such that the outlet ( 4 ) of the outer housing ( 3 ) is bounded and the outer housing ( 3 ) is divided into a first pressure region ( 5 ) and a second pressure region ( 6 ), wherein the first pressure region ( 5 ) and the second pressure region ( 6 ) are subsequently or simultaneously acted on by pressure as pressure regions independent of one another and the pressure is measured in the first pressure region ( 5 ) and the second pressure region ( 6 ). 
 
     
     
       12. A method in accordance with  claim 11 , wherein a testing fluid is supplied and conducted away into the second pressure region ( 6 ) by means of the middle pressure line ( 71 ,  72 ) and is supplied and conducted away into the first pressure region ( 5 ) by means of the high pressure line ( 81 ,  82 ). 
     
     
       13. A method in accordance with  claim 11 , wherein the first pressure region ( 5 ) is pressurized with a higher pressure than the second pressure region ( 6 ). 
     
     
       14. A method in accordance with  claim 1 , wherein the separation element ( 2 ) is arranged in the outer housing ( 3 ) such that the second pressure region ( 6 ) is divided into a first pressure chamber ( 61 ) and a second pressure chamber ( 62 ). 
     
     
       15. A method in accordance with  claim 14 , wherein a common pressure level is formed in the first and second pressure chambers ( 61 ,  62 ).